Grass Valley NVISION Compact CQX - Manual (Page 87)

Compact Router System Configurator • User’s Guide 75
12. Tutorials
Cabling
Operational Considerations
You can view HD sources on the HD monitor and SD sources on the SD monitors.
You can take SD CAM or VTR to any VTR.
The DVDs do not record. Take DVD to VTR in two ‘takes’: DVD to DDD; DDS to VTR. Between
DDD and DDS is a down-converter. There might be a video frame delay (with loss of sync with
audio). To perform a take:
1 Press DDD. 2 Press a DVD. 3 Press a VTR (dest). 4 Press DDS.
The HD CAM would have to go through DDD/DDS as well to reach a VTR.
There are 3 salvos that select microphone (pairs). Pressing a Camera source gets whichever micro-
phone pair you’ve selected. Mic input is converted to AES.
Each salvo contains one take: (level = AA, input = 1, 2, or 3 as required, output = 1).
You can record to VTR but to view/hear the source on the monitors requires an additional take.
A take (or a double take) does not start, stop, rewind, or cue any media. That you have to do on
your own.
Cameras and microphones are assumed to be on at all times. They are not playback devices and
there is no stop, start, rewind, etc. for these devices.
The level buttons are not really necessary — except for those times an operator wants a breakaway.
AA is for the microphones only so its level button could be omitted from the buttons.
The AA router is under-utilized. It is needed because (1) there is only one ADC channel and (2)
there is only one AES input left because of all the DVDs in the system. Take one DVD out and
you’ve got 4 additional AES inputs that could put the mics (through ADCs) directly into the AES
router. Then you wouldn’t need the AA router.
There is only one (expensive) down-converter channel. So any DVD input routed to a VTR (HD-
to-SD down conversion) must go through it. Thus there is one destination (DDD) and one source
port (DDS) for the purpose.
The “mute” salvo works by routing silence to the AES MIC input. The mute does not silence other
AES inputs. A breakaway to silence could do that. The silence is actually low-level noise and not
complete silence. If you ground the mute inputs, you’ll get complete silence.
Cabling Diagram
The diagram is on the next page. It shows the I/O connections of all routers in the cabling example
and the button assignments for the CP1616 panel used.